FITTER
THEORY SEMESTER-IV 2016
1.The
following is machined dry.
a)
Aluminium
b) Cast
iron
c)
Titanium
d) All of
these
Answer:-
b) Cast iron
2.The
following device is used to
determine
the mix ratio of water-
soluble
coolanls:
a) Diffract meter
a) Diffract meter
b)
Hydrometer
c)
Refract meter
d) None
of these
Answer:- c)
Refract meter
3.The use
of metal working fluids_.
a)
Increase the tool life
b)
Produce better surface finish
c)
Prevent rise in temperature
d) All of
these
Answer:- d)
All of these
4.The
main constituent(s) of
mineral
oil is/are_.
a)
Paraffin
b)
Naphthenic
c)
Aromatics
d) All of
these
Answer:- d)
All of these
5.The
following is used in heat
treatment
process as a quenching
medium
for obtaining
a higher degree of hardness.
a higher degree of hardness.
a)
Mineral oil
b) Fatty
acid
c)
Waxes
d)Graphite
suspensions
Answer:- b)
Fatty acid
6.Which
of the following is added
to the cutting fluids so that soapy
film is
produced between the work piece
&
tool and chip & tool face?
a)
Sulphur
b)
Chlorine
c) Both
(a) & (b)
d) None
of these
Answer:- c)
Both (a) & (b)
7.Soluble
oil is used as cutting
fluid in
.............
a) Sawing
b)
Drilling and boring
c)
Reaming
d) All of
these
Answer:- d)
All of these
8.Usually
no cutting oil is used in ....
a)
Broaching
b)
Planning and shaping
c) Thread
rolling
d) Honing
Answer:- b)
Planning and shaping
9.Choose
name of the bolt.
a) Gib
Headed foundation boit
b) Cotter
foundation bolt
c)
Through foundation bolt
d) Eye
foundation bolt
Answer:- d)
Eye foundation bolt
10. ...............
are used to separate
the tramp
oil (sump oil) from coolant.
a)
Magnetic separators
b)
Skimmers
c)
Rotating spindles
d) All of
these
Answer:- b)
Skimmers
11 Which
of the following parameters
influence
the axial feed rate in
centreless grinding?
a)
Regulating wheel diameter
b) Angle
between the axes of grinding
and
regulating wheels
c) Speed
of the regulating wheel
d) All of
these
Answer:- d)
All of these
12. Hydraulic
oil is compressible
a) Not at
all
b) Very
much
c) Very
Little
d) None
of these
Answer:- c)
Very Little
13. Power
= Torque x .................
a) Velocity
a) Velocity
b) RPM
c) Force
d) Area
Answer:- b)
RPM
14. .... is
prime mover in hydraulic system.
a) Oil
b)
Electric Motor
c) Pipe
d)
Impeller
Answer:- b)
Electric Motor
15. Power
of Pump = .............. x
Volume
flow rate.
a)
Velocity
b) RPM
c) Force
d)
Pressure
Answer:- d)
Pressure
16. 1 HP
= ................ W
a) 746
a) 746
b) 1000
c) 100
d) 764
Answer:- a)
746
17. Which
flat belt drive system has
two
pulleys mounted on driven shaft
and one
pulley on driving shaft?
a)
Multiple belt drive
b) Cone
pulley drive
c) Fast
and loose pulley drive
d) None
of these
Answer:- )
Fast and loose pulley drive
18. Which
of the following statements
are false
for belt drives?
i) Belt
drive is used in applications
having constant speed dnve
ii) Belt
drives can be used at extremely
high speeds
iii) Belt
drives have low power
transmitting capacity
iv) Belt
drives need continuous lubrication
a) (i)
& (ii)
b) (i),
(ii) & (iii)
c) (ii),
(iii)&(iv)
d) (i),
(ii) & (iv)
Answer:- d)
(i), (ii) & (iv)
19. Determine
power rating of an electric
motor if
it runs at 1440 r.p.m and line shaft
transmits
torque of 75 Nm. Assume
Reduction
ratio = 1.6 .................
a) 10.36 kW
b) 11.3kW
c) 7.068 kW
d) 9.12kW
Answer:- c) 7.068 kW
20. In
simple gear trains the direction of
rotation
of driven gear is opposite to the
direction of rotation of driving gear
direction of rotation of driving gear
only if
...................
a) Even number of idler gears are present
a) Even number of idler gears are present
b) Odd
number of idler gears are present
c) Any number of idler gears are present
c) Any number of idler gears are present
d) None
of these
Answer:- a)
Even number of idler gears are
present
21.Why is
an idler gear used in gear trains?
a) To
obtain minimum center distance
between driving and driven snatt
b) To
have required direction of rotation
c) Both
(a) & (b)
d. None of these
d. None of these
Answer:- b)
To have required direction
of rotation
22. Determine
torque transmitted on
the
pinion shaft if torque transmitted
on gear
shaft is 20 nm consider Gear ratio = 4
a)8nm
a)8nm
b) 5 nm
c) 80 nm
d)16nm
Answer:- b)
5 nm
23. Which
of the following statements
is/are true for gear drives?
a) They
can be used for long center distances
b) They
are used to transmit power between
non-intersecting
and parallel shafts
c) They
cannot be used for high reduction ratios
d) All of
these
Answer:- b)
They are used to transmit power
between
non-intersecting and parallel shaft
24. Which
gears are used to connect two
intersecting shaft axes?
a)
Crossed helical gear
b) Worm
and worm wheel
c) Bevel
gears
d) All of
these
Answer:- c)
Bevel gears
25. What
is meant by gear ratio?
a) The
ratio of pinion speed and gear speed
b) The
ratio of number of teeth on pinion
and
number of teeth on gear
c) Both
(a) & (b)
d) None
of these
Answer:- a)
The ratio of pinion speed and
gear speed
26. What
is the function of hydraulic
motor?
1.
Hydraulic motor converts hydraulic
oil under
pressure into torque and angular
displacement
2. Hydraulic
motor converts hydraulic
oil under pressure into force and linear
displacement
3.
Hydraulic motor converts hydraulic energy
into mechanical energy
4.
Hydraulic motor converts mechanical energy
into
hydraulic energy
a) 1 and
4 b) 1 and 3 c) 2 and 3 d) 2 and 4
Answer:- b)
1 and 3
27. Calculate
area of a pipe if, flow rate is
20 I/min
and flow velocity is 5 cm/s
a) 66.66
cm²
b) 60 cm²
c) 62 cm²
d) None
of these
Answer:- a)
66.66 cm²
28. What
this hydraulic symbol
a) Motor
unidirectional
b) Motor
bidirectional
c) Pump unidirectional
d) Pump
bidirectional
Answer:- a)
Motor unidirectional
29. In
soldering the melting point of filler
metal is
...................
a) Below
420°C
b) Above
420°C
c) Below
520°C
d) Above
520°C
Answer:- b)
Above 420°C
30. The
composition of electrician
solder is
...........
a)
Lead-37%, tin-63%
b)
Lead-50%, tin-50%
c)
Lead-63%, tin-37%
d)
Lead-70%, tin-30%
Answer:- d)
Lead-70%, tin-30%
31. The
composition of soft solder is____
a)
Lead-37%, tin-63%
b)
Lead-50%, tin-50%
c)
Lead-63%, tin-37%
d)
Lead-70%, tin-30%
Answer:- a)
Lead-37%, tin-63%
32. Corrosion
can be prevented by_
a)
Alloying
b)
Tinning
c)
Galvanizing
d) All of
these
Answer:- d)
All of these
33. As
compare to iron, aluminum has ....
a) Higher
tendency to oxidize
b) Less
tendency to oxidize
c) Equal
tendency to oxidize
d) None
of these
Answer:- a)
Higher tendency to oxidize
34. Conditions
for good electroplating
is/are .......
a) High
current density
b) Low
temperature
c) High
concentration of metal in electrolyte
d) All of
these
Answer:- d)
All of these
35. Iron
is galvanized by coating with ...............
a) Zinc
b)Tin
c) Copper
d) Nickel
Answer:- a)
Zinc
36. Which
defect arises due to faulty
heat treatment?
a) Over
heating and burring
b)
Oxidation and decarburization
c)
Cracks, distortion and warping
d) All of
these
Answer:- d)
All of these
37. In
general, hardening is followed by ....
a)
Annealing
b)
Normalizing
c)
Tempering
d) Case
hardening
Answer:- a)
Annealing
38. This
type of fastener is designed to
prevent
movement between shafts and wheels.
a) Keys
a) Keys
b)
Machine pins
c) Rivets
d)
Knuckle
Answer:- a)
Keys
39. A
mechanical device that stores
energy,
when deflected and to return the
equivalent
amount of energy when released
is known
as a ..................
a) Blind
rivet
b) Key
way
c) Spring
d) Hammer
Answer:- c)
Spring
40. Joint
strength in brazing operation is-.
a) As
high as in gas or arc welding
b) Not as
high as in gas or arc welding
c) Higher
than that of in gas or arc welding
d)
Unpredictable
Answer:- b)
Not as high as in gas or arc
welding
41. Which
of the following is a soft solder?
a)
Copper-zinc alloy
b)
Nickel-silver alloy
c)
Lead-tin alloy
d) All of
these
Answer:- c)
Lead-tin alloy
42. Transmission
angle is the angle between
a) Input
link and coupler
b) Input
link and fixed li
c) Output
link and coupler
d) Output
link and fixed
Answer:- c)
Output link and coupler
43. What
this hydraulic symbol means
a)
Directional control valve
(4 ports 12 positions)
b)
Directional control valve
(4 ports /3 positions)
c)
Directional control valve
(5 ports /2 positions)
d) None
of these
Answer:- a)
Directional control valve
(4 ports 12 positions)
44. Module
of a gear is ..............
a) DAT b)
T/D c) 2D/T d) 2T/D
Answer:- b)
T/D
45. When
screw threads are to be used
in a
situation where power is being
transmitted
in one direction only, then
the screw
threads suitable for this will be ....
a) Square
threads
b)
Knuckle threads
c) Acme
threads
d)
Buttress threads
Answer:- d)
Buttress threads
46. Which
of the following material has
the maximum ductility?
a) Mild steel
a) Mild steel
b) Copper
c)
Aluminium
d) Zinc
Answer:- a)
Mild steel
47. The
sleeve or muff coupling is
designed as a-.
a) Dun
cylinder
b) Solid
shaft
c) Thick
cylinder
d) Hollow
shaft
Answer:- d)
Hollow shaft
48. In a
flange coupling, the flanges are
coupled together by means of_.
a) Studs
b) Bolts
and nuts
c)
Headless taper bolt
d) None
of these
Answer:- b)
Bolts and nuts
49. An
open belt drive is used when ......
a) Driven
shaft is to be started or stopped
whenever
desired without interfering
with the driving
shaft
b) Shafts
are arranged parallel and rotate
in the same directions
c) Shafts
are arranged at right angles and
rotate in one definite direction
d) Shafts
are arranged parallel and rotate
in the opposite directions
Answer:- b)
Shafts are arranged parallel
and rotate in the same
directions
50. When
bevel gears connect two shafts
whose
axes intersect at an angle greater
than a right
angle and one of the bevel gears
has a
pitch angle of 90°, then they are
known as
a)
Internal bevel gears
b)
Angular bevel gears
c) Crown
bevel gears
d) Mitre
gears
Answer:- c)
Crown bevel gears
